. Author manuscript; available in PMC: 2009 Jul 23.

Published in final edited form as: J Am Chem Soc. 2008 Jun 25;130(29):9214–9215. doi: 10.1021/ja803094u

Table 3.

Diels-Alder Reactions of 5 and Dienes

entry	condition^a	yield(%)^b
1	A B	97^c 67^c
2	A B	97^d 65^d
3	A	99
4	A	97^c,^e
5	A	96^c
6	A	55^c

Condition A: 10/10/60/10 mol% CoI₂/8/ZnI₂/Bu₄NBH₄, 40°C; condition B: 60/10 mol% ZnI₂/Bu₄NBH₄, 40°C, see Supporting Information.

Isolated yields.

Single regioisomer.

Single endo isomer.

1.5:1 exo/endo ratio.